python2nix: update to latest

Switch to upstream repo now that pull request #3 is merged.
Windowmaker: update to 0.95.6
python3Packages.pelican: fix build
pythonPackages.nose: disable tests
nixos: increase timeout for jenkins/munin systemd services
package update: go-1.3.1 -> go-1.3.2

Closes #4279
agda-iowa-stdlib: renamed from aaron-stump-stdlib

Per author's request.
Merge pull request #4301 from AndersonTorres/windowmaker

Windowmaker: update to 0.95.6
pythonPackages.configobj: new version needs six as dependency
New package: tty-clock-0.1
Merge pull request #4302 from k0ral/tty-clock

New package: tty-clock-0.1